CN202421906U - Blast furnace alternating-current probe rod control device - Google Patents
Blast furnace alternating-current probe rod control device Download PDFInfo
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- CN202421906U CN202421906U CN2012200083462U CN201220008346U CN202421906U CN 202421906 U CN202421906 U CN 202421906U CN 2012200083462 U CN2012200083462 U CN 2012200083462U CN 201220008346 U CN201220008346 U CN 201220008346U CN 202421906 U CN202421906 U CN 202421906U
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- probe rod
- plc system
- blast furnace
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Abstract
The utility model discloses a blast furnace alternating-current probe rod control device, mainly aiming to solve the problems in the prior art that probe rod is released unsuccessfully, the probe rod releasing speed is not easy to control and the float meter following function is easy to fail. The blast furnace alternating-current probe rod control device comprises a PLC (programmable logic control) system, a motor transmission control device, a motor assembly and a probe rod assembly; the motor transmission control device is provided with a programmable block; and the programmable block comprises an oscillation square wave unit for preventing unsuccessful probe rod release, a torque switching unit for switching the torque to control the probe rod release speed and a float meter following unit used for detecting the information of the fabric contacting a heavy bob, feeding the information of the fabric to the PLC system, receiving the control command sent by the PLC system according to the information of the fabric and constantly controlling the heavy bob falling along with the fabric. The blast furnace alternating-current probe rod control device has the advantages of simple control system, a few interference sources and high work stability.
Description
Technical field
The utility model relates to a kind of blast furnace and exchanges the stock rod control device.
Background technology
Blast furnace probing rod is one of furnace roof visual plant.The big blast furnace of capacity generally has many cover stock rods, and less also has 2 to overlap stock rods, and the operative employee measures the charge level height according to every cover stock rod, grasps charge level situation in the stove in real time, confirms blast furnace material distribution mode and reinforced opportunity.At present the stock rod system is divided into according to the drive motor difference: the direct current stock rod with exchange two types of stock rods.Because direct current stock rod cost is higher, the daily servicing amount is bigger, so exchange the direction that stock rod will become Future Development.But exchange stock rod at present in use, often occur:
In putting the chi process, transfer not freely, can't accomplish and transfer action;
The analysis of causes: convenient for following narration, the torque of transferring that weight is produced is defined as Mg, and mechanical transmission system produces counter torque and is defined as Mf, and the electric electromechanics dynamic torque is defined as Md.If Mg＜Mf, wherein Mg is a definite value, then must the Mf value diminished from mechanical aspects solutions (not setting forth) of starting with here, satisfies Mg＞Mf, and this is the necessary condition of stock rod ability operate as normal.Under Mg＞Mf prerequisite, discuss below, normally put in the chi process, machine operation is at four-quadrant, and electronic torque is being for just, and rotating speed is for negative, this moment Mg-Mf-Md >=0.When Mg-Mf-Md≤0, will produce and transfer smooth phenomenon, mainly because Mf becomes big and Md can not follow adjustment and causes.
It is easy out of control that stock rod is transferred medium velocity, takes place to hammer phenomenon into shape to charge level, causes measuring inaccurate;
The analysis of causes: put in the chi at stock rod, the drive of motor control device is the given control mode of torque.Md is set at fixed value in control system in the past, and then Mg-Mf-Md is approximately definite value in transferring process, promptly transfers and quickens a also for being approximately definite value; To quicken a big and transfer distance when longer when putting; In transferring continuously, the speed of weight can be more and more faster, causes " hypervelocity " phenomenon.Mainly be that Md and lowering velocity do not form the negative feedback control loop.If can not be with lowering velocity control within the specific limits, then weight arrives the preceding rapid speed of charge level, because hammer will take place down action of inertia, if can not in time set upright weight, it is excessive to produce measuring error.
" float meter is followed " function is easy to failure behind charge level;
The analysis of causes: when needing to be grasped the continuous situation of change of blast furnace charge level, then require stock rod to have " float meter is followed " function, when promptly blast furnace charge level descended, stock rod can be followed charge level automatically and changed, and measures to real-time continuous the charge level height.Because after stock rod arrived charge level, the mechanical transfer friction factor became static friction by kinetic friction, then Mf becomes big, and is constant like Md, and Mg-Mf-Md≤0 is set up, and can not realize that charge level follows, and causes " float meter is followed " functional failure.
The utility model content
To the problems referred to above, the utility model provides the blast furnace that a kind of control system is simple, interference source is few, job stability is high to exchange the stock rod control device.
For achieving the above object, the utility model blast furnace exchanges the stock rod control device, comprises PLC system, drive of motor control device, electric machine assembly and stock rod assembly, wherein;
The PLC system sees steering order off, and the stock rod course of work is controlled;
The drive of motor control device, built-in definition editor module, to weight mention, the process of transferring monitors control;
Electric machine assembly receives steering order, the retractable operation of control weight;
The stock rod assembly carries out tracking measurement through weight to blast furnace material charge level height.
Further, said definition editor module comprises that vibration square wave unit, torque switch unit and float meter follow the unit, wherein;
Whether vibration square wave unit detects weight and in transferring process, stops to transfer, and Stop message is fed back to the PLC system, and accept the vibration regulating control command that the PLC system sends according to Stop message, and constant control weight is freely transferred;
The torque switch unit, the lowering velocity of detection weight feeds back to the PLC system with velocity information, and accepts the switching controls instruction that the PLC system sends according to velocity information, constant control weight lowering velocity;
Float meter is followed the unit, detects the charge level information that weight contacts with charge level, and the charge level information feedback is arrived the PLC system; And accept the steering order that the PLC system sends according to charge level information, constant control weight is followed charge level and is descended.
The utility model is not increasing under the hardware case, only utilizes in the stock rod drive of motor control device to have custom programming, accomplishes carrying chi, putting the chi function of stock rod reliably, and it is almost nil to need to increase cost.
The utility model more only keeps two with control device in the past must propose, put the chi instruction from the outside; Other signal is all gathered existing signal in the drive of motor control device; Put forward the chi function, put the chi function, all to be that the drive of motor control device is inner accomplish for torque handoff functionality, float meter output function etc.; Avoided the external signal transmission link, interference source reduces naturally, and job stability is corresponding to be improved.
Description of drawings
Fig. 1 is the control block diagram that the utility model blast furnace exchanges the embodiment of stock rod control device;
Fig. 2 is the electrical principle wiring diagram that the utility model blast furnace exchanges the experimental example of stock rod control device.
Embodiment
Below in conjunction with Figure of description the utility model is done further description.
As shown in Figure 1, the utility model blast furnace exchanges the stock rod control device and only utilizes and carry programmable block in the drive of motor control device and accomplish the speed control and the float meter of the transferring smoothly of stock rod, stock rod and follow function.Basically have process software or programmable block in the drive of motor control device of stock rod at present.For example: SIEMENS flow directing device 6RA70 has process software S00, and SIEMENS alternating current generator transmission control device 6SE70 has free free functional block, and ABB exchanges ACS800 and direct current DCS800 device all has the custom programming function.Owing to exchange the direction that stock rod will become Future Development, driving interchange stock rod motor with ABB ACS800 drive of motor control device below is example, describes this utility model main technical schemes in detail:
This blast furnace exchanges the stock rod control device and comprises PLC system, drive of motor control device, electric machine assembly and stock rod assembly, wherein;
The PLC system carries steering order, and the stock rod course of work is controlled;
The drive of motor control device, built-in definition editor module, to weight mention, the process of transferring monitors control;
Electric machine assembly receives steering order, the retractable operation of control weight;
The stock rod assembly carries out tracking measurement through weight to blast furnace material charge level height.
Further, said definition editor module comprises that vibration square wave unit, torque switch unit and float meter follow the unit, wherein;
Whether vibration square wave unit detects weight and in transferring process, stops to transfer, and Stop message is fed back to the PLC system; And accept the vibration regulating control command that the PLC system sends according to Stop message, constant control weight is freely transferred;
As shown in Figure 2, the square wave oscillation functional diagram, this functional diagram just need be launched under specific stock rod system condition.Under Mg＞Mf prerequisite (promptly do not power on, when the stock rod band-type brake is opened, stock rod is to transfer) at motor, simultaneously electric electromechanics dynamic torque Md settings near or when equalling zero, still exist when transferring smooth phenomenon, then need launch this function.Solve after the stock rod motor stator powers on,,, cause stock rod to transfer owing to reason motor output shaft counter torques such as the symmetry of motor own are non-vanishing though the Md settings equals zero.Be implemented in than motor in the short period through this function and be in the process of freely transferring, can't transfer problem thereby solve stock rod.
Concussion square wave unit has 4 fundamental blocks to be formed, and wherein first three handoff block SWITCH-B, the logical piece TON of time-delay, time-delay fault block are realized the square wave oscillation function, and signal is through realizing and logic that with logical block AND its output signal assignment is given the device built-in command.
The torque switch unit, the lowering velocity of detection weight feeds back to the PLC system with velocity information; And accept the switching controls instruction that the PLC system sends according to velocity information, constant control weight lowering velocity;
When transferring speed greater than the regulation setting value, motor counter torque set-point automatically switches to bigger set-point, and then the speed that the reaches purpose that slows down; Be that torque is given to switch to less set-point, and then reaches the purpose that speeds up when the speed of transferring is not more than the regulation setting value.The realization stock rod is transferred stable speed function in the process.
The torque switch unit has 2 fundamental blocks to be formed, and the absolute value and the regulation of the defeated people's motor actual speed of comparison block COMPARE are transferred the permissible velocity maximal value, and handoff block SWITCH-I is input as given higher value of torque and the given smaller value of torque.
Float meter is followed the unit, detects the charge level information that weight contacts with charge level, the charge level information feedback is arrived the PLC system, and accept the friction steering order that the PLC system sends according to charge level information, and constant control weight is followed charge level and descended.
After the stock rod weight arrived charge level, lowering velocity was zero, outputed to the charge level signal behind the time-delay certain hour.
Float meter is followed the unit and is had 3 fundamental blocks compositions, and absolute value block ABS is converted into absolute value with the motor actual speed, avoids the appearance of negative value, and comparison block COMPAR accomplishes the judgement lowering velocity with the logical piece TON of time-delay and exports signal near zero propagation after 3 seconds.
As shown in Figure 2, experiment electrical wiring schematic diagram.
Realize that through the laboratory this phase utility model is that example is introduced experimental technique and step with me below:
Main hardware is formed: a tail end band scrambler 2.2KW alternating current generator, small-sized reducer casing (reduction gear ratio: 10), a fixed pulley, 50 kilograms of weights, a cover ABB ACS800-01-0009-3 drive of motor control device.
1, by last figure wiring.
2, the electromechanics catcher is thrown off, operation of motor sign and relative parameters setting.
3, connect the motor catcher.
5, functional diagram 1, Fig. 2, Fig. 3 parameter are input in the drive of motor control device.
6, power on.Through KA1, KA2, KA3 simulation carry chi, put the chi function, functions such as speed control, float meter output.
The PLC system carries the chi signal, puts the chi signal for the drive of motor control device through PROFIBUS-DP, only exchanges the programmable block completion control procedure that ACS800 has with ABB.Scrambler is installed as the speed detecting element at the variable-frequency motor axle head, a reductor axle head scrambler that connects material, signal advances PLC through communication bus, reads the height of stock rod by PLC, as the operation signal of detected value and stock rod.The drive of motor control device is accepted the signal of PLC, and PLC carries the chi signal, puts the chi signal for the drive of motor control device; The drive of motor control device is ready to signal and fault-signal to PLC.The drive of motor control device is connected by point-to-point mode with these switching value signals between PLC.
Control mechanism: use the closed-loop vector control system, when carrying chi, select velocity control, machine operation is at motoring condition, and a quadrant moves; When putting chi and float meter, select torque vector control, machine operation enables dynamic braking at the regenerative power generation state state, four quadrant running.
When requiring stock rod to transfer, see off by PLC and to put the chi signal, realize putting chi automatically and keeping lowering velocity to be no more than limits value by drive of motor control device system, when stock rod drops to charge level, keep motor to still have and necessarily put forward chi moment, make the stock rod posture of being kept upright.
When requiring stock rod to promote, see off by PLC and to carry the chi signal, realize carrying chi automatically and keeping pulling speed to be no more than limits value by the drive of motor control device.
When PLC detects stock rod at the top, realize automatic stopping and drop into band-type brake by the drive of motor control device.
More than; Be merely the preferred embodiment of the utility model; But the protection domain of the utility model is not limited thereto; Any technician who is familiar with the present technique field is in the technical scope that the utility model discloses, and the variation that can expect easily or replacement all should be encompassed within the protection domain of the utility model.Therefore, the protection domain of the utility model should be as the criterion with the protection domain that claim was defined.
Claims (2)
1. a blast furnace exchanges the stock rod control device, it is characterized in that, comprises PLC system, drive of motor control device, electric machine assembly and stock rod assembly, wherein;
The PLC system sees steering order off, and the stock rod course of work is controlled;
The drive of motor control device, built-in definition editor module, to weight mention, the process of transferring monitors control;
Electric machine assembly receives steering order, the retractable operation of control weight;
The stock rod assembly carries out tracking measurement through weight to blast furnace material charge level height.
2. blast furnace according to claim 1 exchanges the stock rod control device, it is characterized in that, said definition editor module comprises that vibration square wave unit, torque switch unit and float meter follow the unit, wherein;
Whether vibration square wave unit detects weight and in transferring process, stops to transfer, and Stop message is fed back to the PLC system, and accept the vibration regulating control command that the PLC system sends according to Stop message, and constant control weight is freely transferred;
The torque switch unit, the lowering velocity of detection weight feeds back to the PLC system with velocity information, and accepts the switching controls instruction that the PLC system sends according to velocity information, constant control weight lowering velocity;
Float meter is followed the unit, detects the charge level information that weight contacts with charge level, and the charge level information feedback is arrived the PLC system; And accept the steering order that the PLC system sends according to charge level information, constant control weight is followed charge level and is descended.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200083462U CN202421906U (en) | 2012-01-10 | 2012-01-10 | Blast furnace alternating-current probe rod control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200083462U CN202421906U (en) | 2012-01-10 | 2012-01-10 | Blast furnace alternating-current probe rod control device |
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| Publication Number | Publication Date |
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| CN202421906U true CN202421906U (en) | 2012-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200083462U Expired - Fee Related CN202421906U (en) | 2012-01-10 | 2012-01-10 | Blast furnace alternating-current probe rod control device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104020796A (en) * | 2013-03-02 | 2014-09-03 | 山西太钢不锈钢股份有限公司 | Blast furnace water slag deslagging rotary drum torque signal control method |
| CN104655227A (en) * | 2013-11-21 | 2015-05-27 | 河南众恒工业炉工程技术有限公司 | Intelligent material level detection meter |
| CN114214475A (en) * | 2021-11-22 | 2022-03-22 | 吉林金钢钢铁股份有限公司 | Intelligent control method for torque of blast furnace stock rod |
-
2012
- 2012-01-10 CN CN2012200083462U patent/CN202421906U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104020796A (en) * | 2013-03-02 | 2014-09-03 | 山西太钢不锈钢股份有限公司 | Blast furnace water slag deslagging rotary drum torque signal control method |
| CN104655227A (en) * | 2013-11-21 | 2015-05-27 | 河南众恒工业炉工程技术有限公司 | Intelligent material level detection meter |
| CN114214475A (en) * | 2021-11-22 | 2022-03-22 | 吉林金钢钢铁股份有限公司 | Intelligent control method for torque of blast furnace stock rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HUATIAN ENGINEERING + TECHNOLOGY CORPORATION, MCC Free format text: FORMER NAME: MCC HUATIAN NANJING AUTOMATION ENGINEERING CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: Jianye District of Nanjing City, Jiangsu province 210019 the Fuchun River Street No. 18 Patentee after: Nanjing, sky electrical engineering Technology Co., Ltd. of middle smelting China Address before: 210009 No. 69 Olympic Sports street, Jianye District, Jiangsu, Nanjing Patentee before: MCC Huatian Nanjing Automation Engineering Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20190110 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |